Introduction
The MS120 is a flush-mount IR sensor designed for use with the Niles infrared extender systems.
Features & benefits
The MS120 offers a number of improvements over other miniature IR sensors.
Installation Considerations
Type of Cable
The MS120 connects to the Niles infrared main
Receiving Range and Pickup Angle
The receiving range of the MS120 will vary according to the IR output strength of the remote control being used. Remote strength varies among
We do not recommend this. The cable connected to the MS120 can act as an “antenna” for electrical noise. Locating the MS120 cable too close to a light dimmer or switch may interfere
Installed in a remote room location, the MS120 receives the IR commands transmitted from your existing hand-held remotes in that room. The commands are carried via a CAT-5 cable to your A/V equipment in another room, and instantly “repeated”.
The MS120 is compatible with all current Niles infrared systems. It may be used along with, or as an alternative to, the Niles TS120, WS120, MS120, MS220 and CS120 sensors or the IntelliPad®.
The MS120 is just one part of the three building blocks necessary to complete a Niles IR repeating system:
• | IR Main System Unit—Models MSU140, |
| MSU250, MSU480 and MSU440Z. |
• | IR Sensors/Keypads—Models WS120, TS120, |
| MS120, MS220, CS120, and the IntelliPad. |
•Wideband High-Fidelity Design enables operation with virtually any brand of equipment
•Patent Pending Universal Noise Suppression Design enables operation in virtually any environment: near plasma and LCD displays, compact fluorescent lights, and indirect sunlight
•Excellent IR receiving range — 20’ to 35’ of remote control range (depending upon the strength of your handheld remote)
•Small size of only 1/2” diameter by 2-7/8” long—fits almost anywhere
•10’ connecting cable included
•Printed circuit board design uses surface mount technology, assuring high reliability
•Ideal for both home and commercial installations
•Two year parts and labor limited warranty
systems unit or IRH610 sensor expansion hub with an individual home run of CAT-5 cable. When running wires inside walls, most states and municipalities in the U.S. specify that you must use a special type of wire. Usually, the requirement is that the wire has a specific “CL” fire rating, such as “CL-2” or “CL-3”. Consult your Niles dealer, building contractor, or local building and inspection department if unsure about which type of wire is best for your application.
MS120 Mounting Location
The MS120 is ideal for use in applications when tabletop, ceiling, or wall-mounting is undesirable. Its small size and unobtrusive appearance makes it ideal for installation in obscure, hidden locations, in cabinet facings, or in the sensor knockout built into Niles in-wall loudspeakers. Installing the MS120 close to the primary location of the user will ensure best performance.
brands depending on the number and size of batteries used, and how many IR emitters the remote has. For example, remotes that operate on two small AAA batteries and have only one IR emitter are generally not as strong as remotes that use the larger AA size batteries and have two emitters. Tests with various manufacturers’ remote controls have shown that the operating range can vary from a minimum of 20’ to a maximum of about 35’.
Infrared signals travel essentially line-of-sight. They will not pass through or around solid objects. Do not rely on an IR signal being able to “bounce” off a wall or object to the MS120.
The IR pickup angle of the MS120 is 30° off-axis (horizontal and vertical) at 25’.
Avoiding Electrical Interference
Avoid locating the MS120 near any potential
with the MS120. If you must locate the MS120 near electrical devices, install it in a separate metal electrical box, ground the box to the electrical system ground, and route the MS120 cable several feet away from all electrical wiring.
Avoiding Optical Feedback
If installing the MS120 in the same room as an IR flasher, it is possible for the flasher’s IR output to be picked-up by the MS120. This effect, known as an optical feedback loop, can cause erratic operation. Optical feedback is similar to acoustical feedback: the howling or whistling sound heard in a P.A. system when the microphone is too close to the speaker.
To avoid optical feedback:
1. | Re-position the flasher(s) and/or the sensor. |
2. | Use Niles MF1 or MF2 flashers and cover them |
| with the supplied IR blockers. |
Figure 1.
aHex Nut (supplied)
bWasher (supplied)
cMounting Surface
dIR Cable (10 feet supplied)
eMS120 Miniature IR Sensor (supplied)
fMS120 Lens Bezel (supplied)
12V DC Power Supply
(Supplied with the
MSU250 Main System
Unit) Plugged into an
Unswitched AC Outlet
Powers the System
12V DC Power supply (Not Supplied) plugged into a switched outlet (Niles stock# FG01035)
MSU250
| Power, IR data, status signal and ground | MS120 IR Sensor |
| via CAT-5 wire |
| |
Figure 3. Wiring Diagram (Typical installation with an MSU250 Main System Unit)
• IR Flashers—Models MF1, MF1VF, MF2, MF2VF |
and the IRB1. |
An IR sensor expansion hub, Model IRH610, is available to provide additional sensor inputs to your system.
IMPORTANT: Refer installation to a professional custom installer if you are unfamiliar with any of the following procedures.
The MS120 is designed to flush-mount almost anywhere. Convenient mounting locations for the MS120 are:
•In a cabinet door
•In a wall, or wall-plate
•Behind a speaker grille.*
NOTE: Some types of speaker grilles will reduce the IR pickup range of the MS120. If unsure, test
the pickup range before permanently installing the MS120 behind the speaker grille.
sources of electrical or optical noise, such as light dimmers, low-voltage lights, and neon lights.
Do not install the MS120 into electrical boxes with 110 volt devices
Some states or municipalities allow devices such as the MS120 to be installed into the same electrical box as 110 volt devices, provided a “low- voltage partition” is used between the devices.
Using the MS120 with a Niles MultiZone Keypad with an IR-Sensor Connection
The MS120 is fully compatible with any Niles MultiZone Keypad with an IR-Sensor connection, follow the wiring instructions in Figure 2. For specific information see your Niles MultiZone Keypad manual.
Figure 2. Wiring legend
Figure 4. This color code is based on the industry standard T568A coding for the RJ45 connector. Suggested wiring of
MS120 to Niles MultiZone Keypad that an have IR-Sensor connection
